Tiny heart could be used to build a mini-me

Mini versions of your organs could be used to test how you would respond to specific therapies. In this video, you can see a beating heart-on-a chip created by Donald Ingber and Kevin Kit Parker from Harvard University, which was made from a flexible polymer covered with heart cells produced from mouse embryonic stem cells. Parker remarks that the structure is a bit like a Fruit Roll-Up. The team is planning to connect different organs-on-chips to create personalised guinea pigs.